Anyone use them? I have a book about them, Llewellyn's Complete Book of correspondences. I just never really know how to use them exaclly. Any tips? The book was gift so I'm lost on it.

You can use correspondences for just about anything. Want to bring more fire and passion into your life? Cook with the right herbs and put the right stones next to your bed. Want a more successful career? Put the right stones on your desk or wear jewelry with those stones. Cleanse and program the stones. Pray to/evoke/honor the right Dieties for the help you want in your life. Create incenses with certain herbs (or diffuse the oils) that will generate the energy you need.  Have fun with it!